My computer halts with flashing curser on start up,after fitting new motherboard any ideas what i can do?

Question

The bios can see all my drives but they wont run my operating system disc

Answer 1

yes i agree with richard,theres so many causes for this problem but each time its a different reason for it
one thing to try is changing the ide cable,these are only cheap(around £2-50) and a defective cable can cause your motherboard to stop seeing the hard drive and optical drive
also reset your cmos by removing the cmos retention battery for 20 seconds and then placing it back in
also check your drives jumper settings,some hard drives run on 15 and 16 heads,the 16 heads is the best setting but puts more stress on the drive so try setting it to 15 heads,also try setting it to cable select
another thing to check is in bios,check that the drives in cmos settings are all set to "auto",this makes them get recognized automatically
the main things to check are
1)ide cables
2)ide devices(hard drive / optical drive) jumper settings,set to master for 1 device and master/slave for 2 hard drives or 2 optical drives
3)is your os disk a dvd disk and your optical drive a cdrw drive,if this is the case it wont be recognized
finally check in the bios that your first boot device is the cd rom,otherwise your os disk wont boot and windows cannot start installing
any problems let me know
good luck mate!

Answer 2

Well, there could be a couple of reasons. If all of the drives are being recognized in bios, then it is unlikely to be a drive issue.

Here are a couple of possibilities:

1. If you had an operating system installed before you upgraded the m/b it may be hanging because the device drivers for the old m/b are conflicting with the new hardware. depending on what OS you are running, you may need to reload the operating system to fix this.

2. Your bios is not set to boot from the drive your OS is installed on. You may need to go into bios and make sure that you have the correct drive boot-up order in bios to address this.

3. If you are trying to reinstall your OS from CD, you should realize that, unless you can boot from the CD-ROM, you will be unable to load an OS from the CD-ROM, unless you have a boot diskette for the OS as well.

If your mother board supports booting from the CD-ROM, you may need to go into bios and make sure that it is set up as a boot device if you want to load your OS directly from the CD-ROM without a boot diskette, otherwise it won't work either.

Good luck!

Answer 3

Yes had this so many times but cant remember any
particular specific cause.

If you've just refitted the mainboard one thing that might
help is to reset the bios. This is done by the bios reset
jumper on the mainboard (should be indicated in the
mainboard manual) you move the jumper to the reset
position briefly and then back again.

Be careful! I've blown mainboards with this before
(when I was doing warranty computer repairs) the
thing to remember is to disconnect the powersupply
from the mainboard before doing so.

Alterntively if you have multiple memory sticks in the
computer try taking each one out in turn or if you only
hve one can you find another to establish that the
memory is OK.

Hope this helps

Answer 4

I agree with Warlock.

The most likely reason is that the drivers already installed on your hard drive are conflicting with the new motherboard.

Secondly, check your BIOS settings are correct. You want to boot from your primary IDE drive unless, of course, your motherboard is using SATA hard drives.

As Warlock has already stated, if you're attempting to reinstall your Operating System, you'll need to set your BIOS to boot from your CD/DVD-ROM drive.

I would suggest that if your BIOS can actually see your hard drives that the data cable must be OK. You can, of course, ask your BIOS to autodetect your hard drives and CD/DVD drives again.

Answer 5

Not good, start the PC in safe mode, press F8 on boot, if the PC starts right click MY COMPUTER, click PROPERTIES, go into "HARDWARE" Click "DEVISE MANAGER" expand the "SYSTEM DEVICES" part, go down all the options, click "UNISTALL" once done try restarting the PC and fingers crossed it will install all the devices for your new motherboard..... if your old motherboard had built it sound and graphics, you should uninstall these tooooooo... GOOD LUCK.... worst case reboot from your XP disk and reinstall.....